Estimation of Dielectric Response Parameters of Transformers Using Hybrid Genetic Algorithm

Abstract:

It is important to reveal the relationship between the characteristic quantity of return voltage and polarization characteristics of dielectric in theory. In recent years, some researchers have proposed some equivalent circuit models to study the relationship between the equivalent circuit and the characteristic quantity of return voltage. However, seldom shows how the mathematical model of equivalent circuit parameters estimated is established and these parameters are estimated. The initial slope of return voltage is of great significance to identify the parameters of equivalent circuit based on linear dielectric response theory. Therefore, this paper establishes a mathematical model with the data of initial slope of return voltage for estimating its parameter, and then, a hybrid genetic algorithm is used for solving the problem. The result shows that the model established is feasible and effective.

• Periodical: Advanced Materials Research (Volume 571)
• Pages: 579-583
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.571.579
• Online since: September 2012
• Authors: Tao Zhang, Dong Hui Li, Fei Lin Ma, Hua Jun Ran
• Keywords: Dielectric Response, Initial Slope, Insulation Paper, Parameters Estimation, Return Voltage

References

[1] P.M. Mitchinson, P.L. Lewin, G.C. Chen, P. Jarman, An Experiment for Evaluating the Scale Effect of Moisture on High Voltage Transformer Insulation,. Conference Record of the 2006 IEEE International Symposium on Electrical Insulation, pp.218-221.

DOI: 10.1109/elinsl.2006.1665296

[2] S Xu, R Middleton, F Fetherston, D Pantalone A comparison of Return voltage measurement and frequency domain spectroscopy test on high voltage Insulation[C]/ Proceedings of the 7th International Conference on Properties and Applications of Dielectric Materials , Nagoya, Japan: IEEE, 2003, pp.351-355.

DOI: 10.1109/icpadm.2003.1218424

[3] ZHANG Tao, CAI Jin-ding. Research on parameters identification for dielectric response equivalent circuit of transformers with oil-paper insulation[J]. Advanced Technology of Electrical Engineering and Energy, 2010, 29(04), pp.35-39.

[4] Saha, T. K; Purkait, P.; Muller, F. Deriving an Equivalent Circuit of Transformer Insulation for Understanding the Dielectric response Measurements. IEEE Transactions on Power Delivery, 2005, 20(1): 149-157.

DOI: 10.1109/tpwrd.2004.835436

[5] P.R.S. Jota, S. M. Islam, F. G. Jota, Modeling the Polarization Spectrum in Composite Oil/Paper Insulation Systems, IEEE Transactions on Dielectrics and Electrical Insulation Vol. 6 No. 2, April (1999).

DOI: 10.1109/94.765903

[6] David C Walters, Gerald B Sheble. Genetic algorithm solution of economic dispatch with valve point loading, IEEE Trans on Power System, 1993, 8(3): 1325-1332.

DOI: 10.1109/59.260861

[7] Ioannis G. Damousis, Anastasios G. Bakirtzis, Petros S. Dokopoulos. Network-Constrained Economic Dispatch Using Real-Coded Genetic Algorithm. IEEE TRANSACTIONS ON POWER SYSTEMS, 2003, 18(1): 198-205.

DOI: 10.1109/tpwrs.2002.807115

[8] Li Bing and Jiang Weisun . Chaos Optimization Method and Its Application, Control Theory and Applications, 1997, 14(4): 613-615.

[9] Gao Tiehong, Li Chongxiao, Han Yanfang, Tao Mei. Improved Genetic Algorithms for Varying Parameter Estimation in Nonlinear System. Journal of Data Acquisition & Processing, 2002, 17(3): 271-274.

[10] C. Pan, W. Chen and Y. Yun. Fault diagnostic method of power transformers based on hybrid genetic algorithm evolving wavelet neural network[J]. IET Electr. Power Appl., 2008, 2, (1): 71–76.

DOI: 10.1049/iet-epa:20070302